Suppose the desired confidence level is fixed, then as the sample size is increased the margin of error ختر أحد الخيارات a. does not change O b. may get larger or smallerO C. gets larger O d. gets smaller O

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Suppose the desired confidence level is fixed, then as the sample size is increased the margin of error
اختر أحد الخيارات
a. does not change
b. may get larger or smaller
c. gets larger
d. gets smaller O
Transcribed Image Text:Suppose the desired confidence level is fixed, then as the sample size is increased the margin of error اختر أحد الخيارات a. does not change b. may get larger or smaller c. gets larger d. gets smaller O
Given the regression equation
Y = 90 + 23X, then the predicted value of Y when X = -2 is
اختر أحد الخيارات
a. 136
b. 113 O
с. 44 О
d. -44 O
Transcribed Image Text:Given the regression equation Y = 90 + 23X, then the predicted value of Y when X = -2 is اختر أحد الخيارات a. 136 b. 113 O с. 44 О d. -44 O
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